脱离Eureka使用Ribbon
项目的github:https://github.com/simonsfan/SpringCloud.gitRibbon可以实现客户端的负载均衡,在使用Ribbon实现客户端负载均衡一文中,详细描述了如何在Eureka的环境中结合Ribbon实现负载均衡,但实际项目中不一定配合Eureka使用,本文讲述脱离Eureka后如何使用Ribbon。复制项目ticket-consumer-ribb...
项目的github:https://github.com/simonsfan/SpringCloud.git
Ribbon可以实现客户端的负载均衡,在使用Ribbon实现客户端负载均衡一文中,详细描述了如何在Eureka的环境中结合Ribbon实现负载均衡,但实际项目中不一定配合Eureka使用,本文讲述脱离Eureka后如何使用Ribbon。
复制项目ticket-consumer-ribbon,修改ArtifactId为ticket-consumer-ribbon-without-eureka
pom文件中去掉Eureka依赖
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-eureka</artifactId>
</dependency>
引入Ribbon依赖
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-ribbon</artifactId>
</dependency>
修改配置文件application.yml
server:
port: 9000
spring:
application:
name: ticket-consumer-ribbon-without-eureka
user-provider: #这里是用户微服务的节点名称
ribbon:
listOfServers: localhost:8000,localhost:8001
测试:
分别以8000、8001端口启动user-provider项目微服务;启动ticket-consumer-ribbon-without-eureka项目微服务;浏览器多次访问http://localhost:9000/loginfo,观察ticket-consumer-ribbon-without-eureka控制台,效果如下(只截取部分)
2018-07-20 11:48:25.890 INFO 6336 --- [nio-9000-exec-3] c.simons.cn.controller.TicketController : host=localhost,port=8001,serviceid=user-provider
2018-07-20 11:48:26.149 INFO 6336 --- [nio-9000-exec-4] c.simons.cn.controller.TicketController : host=localhost,port=8000,serviceid=user-provider
2018-07-20 11:48:26.233 INFO 6336 --- [nio-9000-exec-5] c.simons.cn.controller.TicketController : host=localhost,port=8001,serviceid=user-provider
2018-07-20 11:48:26.356 INFO 6336 --- [nio-9000-exec-7] c.simons.cn.controller.TicketController : host=localhost,port=8000,serviceid=user-provider
2018-07-20 11:48:26.517 INFO 6336 --- [nio-9000-exec-9] c.simons.cn.controller.TicketController : host=localhost,port=8001,serviceid=user-provider
2018-07-20 11:48:26.643 INFO 6336 --- [nio-9000-exec-1] c.simons.cn.controller.TicketController : host=localhost,port=8000,serviceid=user-provider
2018-07-20 11:48:26.804 INFO 6336 --- [nio-9000-exec-3] c.simons.cn.controller.TicketController : host=localhost,port=8001,serviceid=user-provider
2018-07-20 11:48:26.962 INFO 6336 --- [nio-9000-exec-5] c.simons.cn.controller.TicketController : host=localhost,port=8000,serviceid=user-provider
2018-07-20 11:48:27.115 INFO 6336 --- [nio-9000-exec-7] c.simons.cn.controller.TicketController : host=localhost,port=8001,serviceid=user-provider
2018-07-20 11:48:27.258 INFO 6336 --- [nio-9000-exec-9] c.simons.cn.controller.TicketController : host=localhost,port=8000,serviceid=user-provider
2018-07-20 11:48:27.419 INFO 6336 --- [nio-9000-exec-1] c.simons.cn.controller.TicketController : host=localhost,port=8001,serviceid=user-provider
可以看到,在没有Eureka的环境下也实现了轮询的负载均衡方式(默认轮询),如果你想修改轮询方式,yml配置文件中添加
server:
port: 9000
spring:
application:
name: ticket-consumer-ribbon-without-eureka
user-provider: #这里是用户微服务的节点名称
ribbon:
listOfServers: localhost:8000,localhost:8001
NFLoadBalancerRuleClassName: com.netflix.loadbalancer.RandomRule #随机访问
注意,上述方式配置负载均衡方式可以成功的前提是你的SpringCloud Netflix版本要高于1.2.0。
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